Home / 129,898.50-194,284.86-76,463.15

Finding the Fourth Proportional to 129,898.50, 194,284.86 and 76,463.15

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Solution

The fourth proportional to 129,898.50, 194,284.86 and 76,463.15 is: 114,363.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,898.50 : 194,284.86 = 76,463.15 : x
  2. Step 2: Convert to fraction form
    129,898.50/194,284.86 = 76,463.15/x
  3. Step 3: Cross multiply
    129,898.50x = 194,284.86 × 76,463.15
  4. Step 4: Simplify right side
    129,898.50x = 14,855,631,421.48
  5. Step 5: Solve for x
    x = 14,855,631,421.48/129,898.50
  6. Step 6: Final answer
    x = 114,363.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.